For the transport of swabs there are several solutions, but always follows the guideline P650 or PI650. If you want to transport for example 1 swab via letterpost follow the instruction like: roll the swab in an absorbent sheet (ref. 460197) put the swab in a 1 position blister (ref. 460...) or when you have 2 swabs a 2 position transportblister ( ref. 460...) or in case of a lot of swabs the multiswabblister (ref. 460850), the filled blister should be finally packed in a leakproof SafetyBag. All the transportblisters will fit into the MiniMailBox (ref. 20121) specially designed for letterpost.